作者：沈铁志（国能神福（石狮）发电有限公司，福建 泉州 362700）

摘要：为了提高火电厂汽轮机危急遮断系统（ETS）及保护回路的可靠 性，排除ETS保护回路中存在的典型设计缺陷及隐患，进一步优化汽轮 机主保护联锁功能，减少ETS保护联锁控制回路误动和拒动风险，避免 火力发电厂经济损失及不安全事件的发生，针对汽轮机危急遮断系统保 护回路设计及安装中常见的典型问题进行了列举和风险分析，对国内火 力发电厂汽轮机危急遮断系统及回路常见设计的潜在风险及产生的原因 进行了研究，提出了针对性的优化解决措施，在应用中切实提高了汽轮 机危急遮断系统及保护回路的可靠性，对工控领域其他应用保护联锁功 能的场所也具有同样的推广和借鉴作用。

关键词：可靠性；危急遮断系统；ETS；保护回路；保护误动

Abstract: In order to improve the reliability of turbine emergency trip  system (ETS) and protection circuit in thermal power plant, eliminate  the typical design defects and hidden troubles in ETS protection circuit,  further optimize the interlock function of turbine main protection,  reduce the risk of Maloperation and rejection of the fossil-fuel power  station chain control circuit, and avoid economic losses and unsafe  incidents, the typical problems in the design and installation of  protection circuit for emergency trip system of Steam Turbine are  enumerated and the risks are analyzed. This paper studies the potential  risks and causes of common design of emergency trip system and circuit  of fossil-fuel Power Station Steam Turbine in China, and puts forward  the corresponding optimized solutions. The reliability of emergency trip  system and protection circuit is improved in the application, which can  be used as a reference for other places in industrial control field.

Key words: Reliability; Emergency trip system; ETS; Protection circuit;  Protection misoperation

在线预览：提高汽轮机ETS保护回路可靠性的技术措施.pd

摘自《自动化博览》2021年8月刊